SILVER-CÆDUA. A statute term for wood under twenty years' growth.
SILVER-OAR. One of the badges of the civil court afloat, conferring the power to arrest for debt if not less than £20.
SILVER-THAW. The term for ice falling in large flakes from the sails and rigging, consequent on a frost followed suddenly by a thaw.
SIMOOM. The Arabian name for the [sirocco] (which see). The simoom, sirocco, samiel, and kamsin seem to be modifications of the same wind from the desert.
SIMULATION. The vice of counterfeiting illness or defect, for the purpose of being invalided.
SINE. A right sine in geometry, is a right line drawn from one end of an arc perpendicularly upon the radius from the centre to the other end of the arc; or it is half the chord of twice the arc.
SINET. An old Chaucerian term for zenith.
SINGING. The chaunt by which the leadsman in the chains proclaims his soundings at each cast:—
"To heave the lead the seaman sprung,
And to the pilot cheerly sung,
By the deep—nine."
SINGLE, To. To unreeve the running part of top-sail sheets, &c., to let them run freely, or for harbour duty.